SQLSERVER数据库备份操作和还原操作做了什么
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2022-04-21 09:24:55
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SQLSERVER数据库备份操作和还原操作做了什么 看了这篇文章： 还原/备份时做了些什么 自己也测试了一下，下面说的错误日志指的是SQLSERVER ERRORLOG 一般在C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\LOG路径下，如果SQLSERVER安装在C盘的话 要打
SQLSERVER数据库备份操作和还原操作做了什么
看了这篇文章：还原/备份时做了些什么
自己也测试了一下，下面说的错误日志指的是SQLSERVER ERRORLOG
一般在C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\LOG路径下，如果SQLSERVER安装在C盘的话
要打开跟踪标志：3004, 3605
完整备份
先清空错误日志
1 EXEC [sys].[sp_cycle_errorlog]
执行数据库完整备份
1 DBCC traceon(3004, 3605, -1) 2 --完整备份 3 BACKUP DATABASE [pratice] 4 TO DISK='D:\pratice_fullbackup_201207160152.bak'
读取错误日志
1 EXEC [sys].[xp_readerrorlog]
备份时候，查询窗口的输出
1 已为数据库 'pratice'，文件 'pratice' (位于文件 2 上)处理了 28152 页。 2 已为数据库 'pratice'，文件 'pratice_log' (位于文件 2 上)处理了 2 页。 3 BACKUP DATABASE 成功处理了 28154 页，花费 1.639 秒(134.195 MB/秒)。
错误日志输出
1 1 2013-12-01 19:17:50.300 spid56 DBCC TRACEON 3004, server process ID (SPID) 56. This is an informational message only; no user action is required. 2 2 2013-12-01 19:17:50.300 spid56 DBCC TRACEON 3605, server process ID (SPID) 56. This is an informational message only; no user action is required. 3 3 2013-12-01 19:17:50.300 spid56 BackupDatabase: Database pratice 4 4 2013-12-01 19:17:50.320 spid56 Backup: Media open 5 5 2013-12-01 19:17:50.320 spid56 Backup: Media ready to backup 6 6 2013-12-01 19:17:50.320 spid56 Backup: Clearing differential bitmaps ---正在清除DCM页面的位信息，因为是完整备份，差异变更(Differential Changed Map，DCM)页面 http://tech.it168.com/a2010/0921/1106/000001106857.shtml 7 7 2013-12-01 19:17:50.330 spid56 Backup: Bitmaps cleared 8 8 2013-12-01 19:17:50.330 spid56 BackupDatabase: Checkpoint done --做checkpoint，将所有修改的数据都被写入磁盘 9 9 2013-12-01 19:17:50.330 spid56 Backup: Scanning allocation bitmaps --扫描数据库第3页：GAM页 和数据库第4页：SGAM页 10 10 2013-12-01 19:17:50.340 spid56 Backup: Done with allocation bitmaps 11 11 2013-12-01 19:17:50.340 spid56 BackupDatabase: Work estimates done --估计备份操作所需要的时间 12 12 2013-12-01 19:17:50.340 spid56 Backup: Leading metadata div done 13 13 2013-12-01 19:17:50.340 spid56 Backup:Copying data --正在拷贝数据 14 14 2013-12-01 19:17:50.340 spid56 Backup: DBReaderCount = 1 --备份数据库读线程只有一个 15 15 2013-12-01 19:17:50.340 spid56 Started file D:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012\MSSQL\DATA\pratice.mdf 16 16 2013-12-01 19:17:51.970 spid56 Completed file D:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012\MSSQL\DATA\pratice.mdf 17 17 2013-12-01 19:17:51.970 spid56 Padding MSDA with 65536 bytes 18 18 2013-12-01 19:17:51.970 spid56 BackupDatabase: Database files done 19 19 2013-12-01 19:17:51.980 spid56 慂正灵慄慴慢敳退慂正灵潌g邐%s : Log files done 20 20 : Log files done 21 21 2013-12-01 19:17:51.980 spid56 Backup: Trailing config done --后续配置完成 22 22 2013-12-01 19:17:51.980 spid56 Backup: MBC done 23 23 2013-12-01 19:17:51.990 spid56 BackupDatabase: Writing history records --写入备份历史记录到错误日志 24 24 2013-12-01 19:17:51.990 备份 Database backed up. Database: pratice, creation date(time): 2013/11/19(19:35:23), pages dumped: 28171, first LSN: 3087:10132:37, last LSN: 3087:10149:1, number of dump devices: 1, device information: (FILE=1, TYPE=DISK: {D:\pratice_fullbackup_201207160152 --pages dumped: 28171 BACKUP DATABASE 成功处理了 28154 页，花费 1.639 秒(134.195 MB/秒) 25 25 2013-12-01 19:17:51.990 spid56 Writing backup history records --写入备份历史记录到msdb的相关备份表 26 26 2013-12-01 19:17:52.010 spid56 BackupDatabase: Finished
关键的语句我都做了一些解释
2013-12-01 19:17:50.320 spid56 Backup: Clearing differential bitmaps ---正在清除DCM页面的位信息，因为是完整备份，差异变更(Differential Changed Map，DCM)页面 http://tech.it168.com/a2010/0921/1106/000001106857.shtml
差异备份
1 --差异备份 2 Backup Database [pratice] 3 To disk='d:\pratice_Diff_20070908.bak' 4 With Differential
备份时候，查询窗口的输出
1 已为数据库 'pratice'，文件 'pratice' (位于文件 1 上)处理了 40 页。 2 已为数据库 'pratice'，文件 'pratice_log' (位于文件 1 上)处理了 1 页。 3 BACKUP DATABASE WITH DIFFERENTIAL 成功处理了 41 页，花费 0.016 秒(20.019 MB/秒)。
错误日志输出
1 2013-12-01 19:42:29.790 spid56 BackupDatabase: Database pratice 2 2013-12-01 19:42:29.820 spid56 Backup: Media open 3 2013-12-01 19:42:29.820 spid56 Backup: Media ready to backup 4 2013-12-01 19:42:29.820 spid56 BackupDatabase: Checkpoint done 5 2013-12-01 19:42:29.820 spid56 Backup: Scanning allocation bitmaps 6 2013-12-01 19:42:29.830 spid56 Backup: Done with allocation bitmaps 7 2013-12-01 19:42:29.830 spid56 BackupDatabase: Work estimates done 8 2013-12-01 19:42:29.830 spid56 Backup: Leading metadata div done 9 2013-12-01 19:42:29.830 spid56 Backup:Copying data 10 2013-12-01 19:42:29.830 spid56 Backup: DBReaderCount = 1 11 2013-12-01 19:42:29.830 spid56 Started file D:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012\MSSQL\DATA\pratice.mdf 12 2013-12-01 19:42:29.830 spid56 Completed file D:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012\MSSQL\DATA\pratice.mdf 13 2013-12-01 19:42:29.830 spid56 Padding MSDA with 720896 bytes 14 2013-12-01 19:42:29.840 spid56 BackupDatabase: Database files done 15 2013-12-01 19:42:29.840 spid56 慂正灵慄慴慢敳退慂正灵潌g邐%s : Log files done 16 : Log files done 17 2013-12-01 19:42:29.840 spid56 Backup: Trailing config done 18 2013-12-01 19:42:29.840 spid56 Backup: MBC done 19 2013-12-01 19:42:29.840 spid56 BackupDatabase: Writing history records 20 2013-12-01 19:42:29.840 备份 Database differential changes were backed up. Database: pratice, creation date(time): 2013/11/19(19:35:23), pages dumped: 139, first LSN: 3087:10184:34, last LSN: 3087:10200:1, full backup LSN: 3087:10159:37, number of dump devices: 1, device information: 21 2013-12-01 19:42:29.850 spid56 Writing backup history records 22 2013-12-01 19:42:29.860 spid56 BackupDatabase: Finished
跟完整备份的错误日志差不多
日志备份
1 --日志备份，默认截断日志 2 Backup Log [pratice] 3 To disk='d:\pratice_Log_20070908.bak'
备份时候，查询窗口的输出
1 已为数据库 'pratice'，文件 'pratice_log' (位于文件 1 上)处理了 29 页。 2 BACKUP LOG 成功处理了 29 页，花费 0.008 秒(27.954 MB/秒)。
错误日志输出
1 2013-12-01 19:48:02.080 spid56 BackupLog: database pratice 2 2013-12-01 19:48:02.100 spid56 BackupLog: SafeCheckpoint done 3 2013-12-01 19:48:02.110 spid56 Backup: Media open 4 2013-12-01 19:48:02.110 spid56 Backup: Media ready to backup 5 2013-12-01 19:48:02.110 spid56 BackupLog: Work estimate done 6 2013-12-01 19:48:02.110 spid56 Backup: Leading metadata div done 7 2013-12-01 19:48:02.110 spid56 慂正灵潌g邐%s : Log files done 8 : Log files done 9 2013-12-01 19:48:02.110 spid56 Backup: Trailing config done 10 2013-12-01 19:48:02.110 spid56 Backup: MBC done 11 2013-12-01 19:48:02.120 spid56 BackupLog: Writing history records 12 2013-12-01 19:48:02.120 备份 Log was backed up. Database: pratice, creation date(time): 2013/11/19(19:35:23), first LSN: 3087:9742:1, last LSN: 3087:10200:1, number of dump devices: 1, device information: (FILE=1, TYPE=DISK: {'d:\pratice_Log_20070908.bak'}). This is an informational m 13 2013-12-01 19:48:02.120 spid56 Writing backup history records 14 2013-12-01 19:48:02.140 spid56 BackupLog: Finished
日志备份里只有这句话跟差异备份和完整备份不一样
1 2013-12-01 19:48:02.100 spid56 BackupLog: SafeCheckpoint done
文件备份
1 --文件备份 2 Exec Sp_Helpdb pratice --查看数据文件 3 Backup Database pratice 4 File='pratice' --数据文件的逻辑名 5 To disk='d:\pratice_File_20070908.bak'
备份时候，查询窗口的输出
1 已为数据库 'pratice'，文件 'pratice' (位于文件 1 上)处理了 28152 页。 2 已为数据库 'pratice'，文件 'pratice_log' (位于文件 1 上)处理了 2 页。 3 BACKUP DATABASE...FILE=name> 成功处理了 28154 页，花费 1.663 秒(132.258 MB/秒)。
错误日志输出
1 2013-12-01 20:53:13.480 spid56 BackupDatabase: Database pratice 2 2013-12-01 20:53:13.500 spid56 Backup: Media open 3 2013-12-01 20:53:13.500 spid56 Backup: Media ready to backup 4 2013-12-01 20:53:13.500 spid56 Backup: Clearing differential bitmaps 5 2013-12-01 20:53:13.500 spid56 Backup: Bitmaps cleared 6 2013-12-01 20:53:13.510 spid56 BackupDatabase: Checkpoint done 7 2013-12-01 20:53:13.510 spid56 Backup: Scanning allocation bitmaps 8 2013-12-01 20:53:13.510 spid56 Backup: Done with allocation bitmaps 9 2013-12-01 20:53:13.510 spid56 BackupDatabase: Work estimates done 10 2013-12-01 20:53:13.510 spid56 Backup: Leading metadata div done 11 2013-12-01 20:53:13.510 spid56 Backup:Copying data 12 2013-12-01 20:53:13.520 spid56 Backup: DBReaderCount = 1 13 2013-12-01 20:53:13.520 spid56 Started file D:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012\MSSQL\DATA\pratice.mdf 14 2013-12-01 20:53:15.200 spid56 Completed file D:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012\MSSQL\DATA\pratice.mdf 15 2013-12-01 20:53:15.200 spid56 Padding MSDA with 65536 bytes 16 2013-12-01 20:53:15.200 spid56 BackupDatabase: Database files done 17 2013-12-01 20:53:15.210 spid56 慂正灵慄慴慢敳退慂正灵潌g邐%s : Log files done 18 : Log files done 19 2013-12-01 20:53:15.210 spid56 Backup: Trailing config done 20 2013-12-01 20:53:15.210 spid56 Backup: MBC done 21 2013-12-01 20:53:15.220 spid56 BackupDatabase: Writing history records 22 2013-12-01 20:53:15.220 备份 Database file was backed up. Database: pratice, creation date(time): 2013/11/19(19:35:23), file list: (pratice(D:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012\MSSQL\DATA\pratice.mdf)), pages dumped: 28171, number of dump devices: 1, device informatio 23 2013-12-01 20:53:15.230 spid56 Writing backup history records 24 2013-12-01 20:53:15.240 spid56 BackupDatabase: Finished
文件组备份
1 --文件组备份 2 Exec Sp_Helpdb pratice --查看数据文件 3 Backup Database pratice 4 FileGroup='Primary' --数据文件的逻辑名 5 To disk='d:\pratice_FileGroup_20070908.bak' 6 With init
备份时候，查询窗口的输出
1 已为数据库 'pratice'，文件 'pratice' (位于文件 1 上)处理了 28152 页。 2 已为数据库 'pratice'，文件 'pratice_log' (位于文件 1 上)处理了 2 页。 3 BACKUP DATABASE...FILE=name> 成功处理了 28154 页，花费 1.679 秒(130.998 MB/秒)。
错误日志输出
1 2013-12-01 20:58:49.790 spid56 BackupDatabase: Database pratice 2 2013-12-01 20:58:49.800 spid56 Backup: Media open 3 2013-12-01 20:58:49.800 spid56 Backup: Media ready to backup 4 2013-12-01 20:58:49.800 spid56 Backup: Clearing differential bitmaps 5 2013-12-01 20:58:49.810 spid56 Backup: Bitmaps cleared 6 2013-12-01 20:58:49.810 spid56 BackupDatabase: Checkpoint done 7 2013-12-01 20:58:49.810 spid56 Backup: Scanning allocation bitmaps 8 2013-12-01 20:58:49.820 spid56 Backup: Done with allocation bitmaps 9 2013-12-01 20:58:49.820 spid56 BackupDatabase: Work estimates done 10 2013-12-01 20:58:49.820 spid56 Backup: Leading metadata div done 11 2013-12-01 20:58:49.820 spid56 Backup:Copying data 12 2013-12-01 20:58:49.820 spid56 Backup: DBReaderCount = 1 13 2013-12-01 20:58:49.820 spid56 Started file D:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012\MSSQL\DATA\pratice.mdf 14 2013-12-01 20:58:51.480 spid56 Completed file D:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012\MSSQL\DATA\pratice.mdf 15 2013-12-01 20:58:51.480 spid56 Padding MSDA with 65536 bytes 16 2013-12-01 20:58:51.480 spid56 BackupDatabase: Database files done 17 2013-12-01 20:58:51.480 spid56 慂正灵慄慴慢敳退慂正灵潌g邐%s : Log files done 18 : Log files done 19 2013-12-01 20:58:51.480 spid56 Backup: Trailing config done 20 2013-12-01 20:58:51.480 spid56 Backup: MBC done 21 2013-12-01 20:58:51.500 spid56 BackupDatabase: Writing history records 22 2013-12-01 20:58:51.500 备份 Database file was backed up. Database: pratice, creation date(time): 2013/11/19(19:35:23), file list: (pratice(D:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012\MSSQL\DATA\pratice.mdf)), pages dumped: 28171, number of dump devices: 1, device informatio 23 2013-12-01 20:58:51.500 spid56 Writing backup history records 24 2013-12-01 20:58:51.520 spid56 BackupDatabase: Finished
在完整备份和差异备份里面为什麽，查询窗口输出的“成功处理页面”比 错误日志里pages dumped的页面还要少？？
就算加上数据库头部的一些关键页面PFS 、DCM、 BCM、 IAM页面加起来也没有那麽多
数据库头部的一些关键页面PFS 、DCM、 BCM、 IAM参考文章：查看SQLSERVER内部数据页面的小插件Internals Viewer
下面是完整备份时候的输出，多了17页
BACKUP DATABASE 成功处理了 28154 页
pages dumped: 28171
其实文章里也有提示：还原/备份时做了些什么
比如，你有个1TB的数据库，但是只储存了100GB的数据，那么备份的时候，只需要备份这100GB的数据。
然而，在还原数据库的时候，你必须重构1TB的数据库，那将意味着大量的时间将被消耗
这篇文章也有一些提示：谁用掉了我的数据库空间？
SQL Server在使用数据页的时候，为了提高速度，会先把一些页面一次预留”reserve”给表格，然后真正有数据插入的时候，再使用
查询窗口里输出的是实际就是数据库真正存储数据的页面的数量
BACKUP DATABASE 成功处理了 28154 页
而错误日志就是所有页面，不论是存储数据还是PFS页面还是预留页面
相关实验：下面的实验创建了一个3GB大小的数据库，然后插入了一些数据到数据库中
（1）不对数据库进行收缩，直接备份数据库，然后还原
（2）先对数据库进行收缩，备份数据库，然后还原
USE master GO --创建数据库 初始大小为3G CREATE DATABASE [testbackupdb] ON PRIMARY ( NAME = N'testbackupdb', FILENAME = N'D:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\DATA\testbackupdb.mdf' , SIZE = 3072000KB , FILEGROWTH = 1024KB ) LOG ON ( NAME = N'testbackupdb_log', FILENAME = N'D:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL\DATA\testbackupdb_log.ldf' , SIZE = 1024KB , FILEGROWTH = 10%) GO --创建表 USE [testbackupdb] GO CREATE TABLE aa (id INT,NAME NVARCHAR(MAX)) GO --插入数据 INSERT INTO aa SELECT 1,REPLICATE('aa',500) GO 10000 --查看表使用的空间 大概26MB sys.sp_spaceused aa sys.sp_helpdb [testbackupdb] --备份数据库 BACKUP DATABASE [testbackupdb] TO DISK ='d:\testbackupdb_fullbackup.bak' --删除数据库 DROP DATABASE [testbackupdb] --1、还原数据库 没有收缩数据库的情况下 SET STATISTICS TIME ON RESTORE DATABASE [testbackupdb] FROM DISK = N'D:\testbackupdb_fullbackup.bak' WITH FILE = 1, MOVE N'testbackupdb' TO N'D:\testbackupdb.mdf', MOVE N'testbackupdb_log' TO N'D:\testbackupdb_1.ldf', NOUNLOAD, REPLACE, STATS = 10 GO SET STATISTICS TIME OFF SQL Server 执行时间: CPU 时间 = 140 毫秒，占用时间 = 3024 毫秒。 SQL Server 分析和编译时间: CPU 时间 = 0 毫秒，占用时间 = 0 毫秒。 ------------------------------------------------------------------------------------------- --收缩数据库为100MB USE [testbackupdb] GO DBCC SHRINKFILE (N'testbackupdb' , 100) GO --备份数据库 BACKUP DATABASE [testbackupdb] TO DISK ='d:\testbackupdb_fullbackup.bak' --删除数据库 DROP DATABASE [testbackupdb] --2、还原数据库 没有收缩数据库的情况下 SET STATISTICS TIME ON RESTORE DATABASE [testbackupdb] FROM DISK = N'D:\testbackupdb_fullbackup.bak' WITH FILE = 1, MOVE N'testbackupdb' TO N'D:\testbackupdb.mdf', MOVE N'testbackupdb_log' TO N'D:\testbackupdb_1.ldf', NOUNLOAD, REPLACE, STATS = 10 GO SET STATISTICS TIME OFF SQL Server 执行时间: CPU 时间 = 140 毫秒，占用时间 = 1549 毫秒。 SQL Server 分析和编译时间: CPU 时间 = 0 毫秒，占用时间 = 10 毫秒。 --查看数据库大小 sys.sp_spaceused aa sys.sp_helpdb [testbackupdb] --结论：备份数据库前先收缩，还原数据库的时候会比较快 --因为收缩了数据库之后，数据库的size变成了收缩之后的大小，其实还原数据库的时候 --SQLSERVER根据根据这个初始大小先初始化出这个数据库初始大小的磁盘空间，然后再复制数据View Code
结论：备份数据库前先收缩，还原数据库的时候会比较快
因为收缩了数据库之后，数据库的size变成了收缩之后的大小，其实还原数据库的时候
SQLSERVER根据根据这个初始大小先初始化出这个数据库初始大小的磁盘空间，然后再复制数据
数据库还原时候的信息
执行下面脚本先kill掉所有连接到pratice数据库的连接
1 --执行下面脚本先kill掉所有连接到pratice数据库的连接 2 USE master 3 GO 4 DECLARE @spid INT 5 DECLARE @count INT 6 WHILE @count > 0 7 BEGIN 8 SELECT @count = COUNT(*) 9 FROM sys.[sysprocesses] 10 WHERE [dbid] = DB_ID('pratice') 11 SELECT @spid = [spid] 12 FROM sys.[sysprocesses] 13 WHERE [dbid] = DB_ID('pratice') 14 EXEC('kill '+@spid) 15 END
1 --完整备份还原 2 RESTORE DATABASE [pratice] 3 FROM DISK ='D:\pratice_backup_201207160152.bak' WITH REPLACE
还原的时候，查询窗口的输出
1 已为数据库 'pratice'，文件 'pratice' (位于文件 1 上)处理了 28152 页。 2 已为数据库 'pratice'，文件 'pratice_log' (位于文件 1 上)处理了 2 页。 3 RESTORE DATABASE 成功处理了 28154 页，花费 2.267 秒(97.020 MB/秒)。
错误日志输出
1 2013-12-01 21:20:47.490 spid56 RestoreDatabase: Database pratice 2 2013-12-01 21:20:47.490 spid56 Opening backup set --打开备份集 3 2013-12-01 21:20:47.500 spid56 SetTargetRestoreAge: 0 4 2013-12-01 21:20:47.500 spid56 Restore: Configuration div loaded --读取数据库配置，例如数据库的初始大小 5 2013-12-01 21:20:47.500 spid56 Restore: Backup set is open 6 2013-12-01 21:20:47.500 spid56 Restore: Planning begins 7 2013-12-01 21:20:47.520 spid56 Halting FullText crawls on database pratice --因为pratice数据库使用了全文搜索，这里会Halting停止全文搜索抓取 8 2013-12-01 21:20:47.520 spid56 Dismounting FullText catalogs --卸载FullText目录 9 2013-12-01 21:20:47.520 spid56 X-locking database: pratice --用排他锁锁住pratice数据库 10 2013-12-01 21:20:47.520 spid56 Resuming any halted fulltext crawls 恢复全文搜索抓取 11 2013-12-01 21:21:28.310 spid56 RestoreDatabase: Database pratice 12 2013-12-01 21:21:28.310 spid56 Opening backup set 13 2013-12-01 21:21:28.320 spid56 SetTargetRestoreAge: 0 14 2013-12-01 21:21:28.320 spid56 Restore: Configuration div loaded 15 2013-12-01 21:21:28.320 spid56 Restore: Backup set is open 16 2013-12-01 21:21:28.320 spid56 Restore: Planning begins 17 2013-12-01 21:21:28.340 spid56 Halting FullText crawls on database pratice 18 2013-12-01 21:21:28.340 spid56 Dismounting FullText catalogs 19 2013-12-01 21:21:28.340 spid56 X-locking database: pratice 20 2013-12-01 21:21:28.340 spid56 Restore: Planning complete 21 2013-12-01 21:21:28.340 spid56 Restore: BeginRestore (offline) on pratice 22 2013-12-01 21:21:28.340 spid56 AppDomain 2 (pratice.dbo[runtime].1) is marked for unload due to common language runtime (CLR) or security data definition language (DDL) operations. --卸载CLR 23 2013-12-01 21:21:28.350 spid20s AppDomain 2 (pratice.dbo[runtime].1) unloaded. 24 2013-12-01 21:21:28.360 spid56 Restore: PreparingContainers --准备容器 25 2013-12-01 21:21:28.390 spid56 Restore: Containers are ready --容器准备完成 26 2013-12-01 21:21:28.390 spid56 Zeroing D:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012\MSSQL\DATA\pratice_log.ldf from page 1 to 6528 (0x2000 to 0x3300000) --日志填零初始化 27 2013-12-01 21:21:28.430 spid56 Restore: Restoring backup set 28 2013-12-01 21:21:28.430 spid56 Restore: Transferring data to pratice --传输数据到pratice数据库 29 2013-12-01 21:21:28.570 spid56 Zeroing completed on D:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012\MSSQL\DATA\pratice_log.ldf 30 http://blogs.msdn.com/b/apgcdsd/archive/2013/06/17/sql-server-log-write.aspx 31 2013-12-01 21:21:30.670 spid56 Restore: Waiting for log zero on pratice 32 2013-12-01 21:21:30.680 spid56 Restore: LogZero complete --日志填零完毕 33 2013-12-01 21:21:30.680 spid56 SetTargetRestoreAge: 0 34 2013-12-01 21:21:30.700 spid56 FileHandleCache: 0 files opened. CacheSize: 12 35 2013-12-01 21:21:30.700 spid56 Restore: Data transfer complete on pratice --数据传输完毕 36 2013-12-01 21:21:30.710 spid56 Restore: Backup set restored --备份集已经还原 37 2013-12-01 21:21:30.720 spid56 Starting up database 'pratice'. --启动pratice数据库 38 2013-12-01 21:21:30.780 spid56 The database 'pratice' is marked RESTORING and is in a state that does not allow recovery to be run. --数据库处于正在还原状态，还未能完全恢复进行运行 39 --SQLSERVER数据库主要状态和切换路径 http://www.cnblogs.com/lyhabc/archive/2012/09/15/2687076.html 40 2013-12-01 21:21:30.780 spid56 Restore-Redo begins on database pratice --重做日志!! 41 2013-12-01 21:21:30.790 spid56 RunOfflineRedo logIter.Init(): FirstLsn(PruId: 0): 0xc0f:0x27dd:0x25 42 2013-12-01 21:21:30.790 spid56 RunOfflineRedo logIter.Init(): LastLsn(PruId: 0): 0xc0f:0x27ee:0x1 43 2013-12-01 21:21:30.790 spid56 OfflineRollforward: StopLsn/LastLsn(PruId: 0): 0xc0f:0x27ee:0x1 44 2013-12-01 21:21:30.790 spid56 Rollforward complete on database pratice --为什麽会有Rollforward http://www.cnblogs.com/lyhabc/p/3448449.html 45 2013-12-01 21:21:30.810 spid56 Restore: Done with fixups --checkdb检查完毕 fixup：修正 46 2013-12-01 21:21:30.810 spid56 Restore: Transitioning database to ONLINE 47 2013-12-01 21:21:30.810 spid56 Restore: Restarting database for ONLINE 48 2013-12-01 21:21:30.820 spid56 Starting up database 'pratice'. 49 2013-12-01 21:21:30.860 spid56 FixupLogTail(progress) zeroing D:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012\MSSQL\DATA\pratice_log.ldf from 0x1efdc00 to 0x1efe000. --修正日志尾部 50 2013-12-01 21:21:30.860 spid56 Zeroing D:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012\MSSQL\DATA\pratice_log.ldf from page 3967 to 4447 (0x1efe000 to 0x22be000) 51 2013-12-01 21:21:30.870 spid56 Zeroing completed on D:\Program Files\Microsoft SQL Server\MSSQL11.SQL2012\MSSQL\DATA\pratice_log.ldf 52 2013-12-01 21:21:30.870 spid56 PostRestoreContainerFixups: fixups complete 53 2013-12-01 21:21:30.870 spid56 CHECKDB for database 'pratice' finished without errors on 2013-11-23 23:35:18.670 (local time). This is an informational message only; no user action is required. 54 2013-12-01 21:21:30.880 spid56 PostRestoreReplicationFixup for pratice starts --复制相关 55 2013-12-01 21:21:30.970 spid56 PostRestoreReplicationFixup for pratice complete 56 2013-12-01 21:21:30.970 spid56 Restore: Database is restarted --数据库已经重启 57 2013-12-01 21:21:30.970 备份 Restore is complete on database 'pratice'. The database is now available. --数据库还原完成，数据库现在是可用状态 58 2013-12-01 21:21:30.980 spid56 Resuming any halted fulltext crawls --恢复全文搜索抓取 59 2013-12-01 21:21:30.990 spid56 Restore: Writing history records --还原数据库记录写入msdb里相关的表 60 2013-12-01 21:21:30.990 备份 Database was restored: Database: pratice, creation date(time): 2013/11/19(19:35:23), first LSN: 3087:10205:37, last LSN: 3087:10222:1, number of dump devices: 1, device information: (FILE=1, TYPE=DISK: {'D:\pratice_backup_201207160152.bak'}). Informational 61 2013-12-01 21:21:30.990 spid56 Writing backup history records --备份历史记录写入到错误日志 62 2013-12-01 21:21:31.010 spid56 Restore: Done with MSDB maintenance 63 2013-12-01 21:21:31.010 spid56 RestoreDatabase: Finished
还有两个跟踪标志
跟踪标志：3014、3604
为了节省篇幅我就补贴出刚才两个跟踪标志的信息了，只贴出3014、3604这两个跟踪标志输出的信息
1 dbcc traceon(3014, 3604, -1)
完整备份
1 2013-12-01 22:22:03.300 spid56 Calculating expected total data to write --计算需要写入备份设备的数据量 2 2013-12-01 22:22:03.300 spid56 Fid(1) E